Easy Pecan Pie Bars

Preheat oven to 350 °F (175°C) . Grease 13 x 9 x 2-inch pan. Reserve 2/3 cup of the dry cake mix for filling. In large bowl, combine remaining dry cake mix, butter and 1 egg at low speed until well blended. Press in bottom of prepared pan. Bake for 15 to 20 minutes or until light golden brown. In large bowl, combine reserved 2/3 cup dry cake mix, brown sugar, corn syrup, vanilla and 3 eggs at low speed until moistened. Beat 1 minute at medium speed or until well blended. Pour filling mixture over warm base; sprinkle with pecans. Bake an additional 30 to 35 minutes or until filling is set. Cool completely. Cut into bars. Store in refrigerator.